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Finding the Fourth Proportional to 123,343.68, 185,080.36 and 87,551.11

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Solution

The fourth proportional to 123,343.68, 185,080.36 and 87,551.11 is: 131,372.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,343.68 : 185,080.36 = 87,551.11 : x
  2. Step 2: Convert to fraction form
    123,343.68/185,080.36 = 87,551.11/x
  3. Step 3: Cross multiply
    123,343.68x = 185,080.36 × 87,551.11
  4. Step 4: Simplify right side
    123,343.68x = 16,203,991,496.08
  5. Step 5: Solve for x
    x = 16,203,991,496.08/123,343.68
  6. Step 6: Final answer
    x = 131,372.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.